ASTROSAT CZTI

Data Quality Report

Orbit 33353

Creation date: 2024-06-27T20:47:47.948215
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_058T15_9000004786_33353cztM0_level2.evt modeM0/AS1A10_058T15_9000004786_33353cztM0_level2_quad_clean.evt
Size (bytes)573,048,00093,732,480
Size546.5 MB 89.4 MB
Events in quadrant A2,490,656650,069
Events in quadrant B3,833,034640,980
Events in quadrant C3,495,885634,873
Events in quadrant D7,195,977560,306

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103163
B0146522
C0134632
D0249112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A502160.119498%
B50212755.476997%
C50212344.660426%
D502198119.537941%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7084 5022 1 1 0.01% 0.02%
B 7084 5022 168 168 2.37% 3.35%
C 7084 5022 179 179 2.53% 3.56%
D 7084 5022 1003 1003 14.16% 19.97%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 26037 201.17 634 624 126.3
A 13 254 7454 54.07 634 624 126.3
A 0 254 6732 48.35 634 624 126.3
B 5 172 762895 6447.96 619 604 118.2
B 0 219 336139 2838.18 619 604 118.2
B 0 190 87378 733.99 619 604 118.2
C 1 23 603563 4431.86 593 599 136.1
C 0 10 218315 1600.24 593 599 136.1
C 15 214 218150 1599.03 593 599 136.1
D 8 195 1919154 12796.06 578 567 149.9
D 1 52 1423273 9488.77 578 567 149.9
D 12 218 849655 5663.01 578 567 149.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter